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Species: Crematogaster (Crematogaster) pilosa   Emery, 1895 

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Crematogaster pilosa_nr

Taxonomic History (provided by Barry Bolton, 2021)

Crematogaster lineolata subsp. pilosa Emery, 1895d PDF: 285, attributed to Pergande. (w.) U.S.A. (District of Columbia). Nearctic. AntCat AntWiki HOL

Taxonomic history

Wheeler, 1933d PDF: 85 (q.) (in text); Morgan & Mackay, 2017 PDF: 321 (m.).
Raised to species: Wheeler, 1919h PDF: 111; Creighton, 1950a PDF: 216; Johnson, 1988: 321.
Senior synonym of Crematogaster creightoni and material of the nomen nudum Crematogaster subpilosa referred here: Buren, in Smith, 1958c PDF: 127.
// Distribution


  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: United States
  Biogeographic regions (According to curated Bioregion/Taxon lists):

Distribution Notes:



Habitat: There seems to be some confusion regarding the ecology, or perhaps the identification, of C. pilosa. According to Johnson (1988) -- the species is mainly arboreal preferring mesic forests, overgrown fields, orchards, landscaped areas, and will nest in trees, grasses, reeds, etc.-, and MacGown at states -- Crematogaster pilosa is a common species in this area that nests in logs, fallen branches, and in hollow stems of many species of plants (shrubs, grass, trees, forbes {sic}, etc.). Both of these accounts are at variance with other published reports and my own experience of this ant as a species that nests near the ground in wet-mesic and wet habitats. In an account from Ohio by Coovert (2005) more similar to my experience, it is reported from semi-open and areas as well as moist woods, and significantly, he also reports it feeding at flowers of Oxypolis rigidior, a wet-prairie and sedge meadow plant. In Missouri, I have collected C. pilosa nesting in sedge tussocks both in a wet prairie in Howell Co. and in a fen in Washington Co.

Natural History: Largely unknown, but C. pilosa no doubt preys, scavenges and gathers honeydew and nectar like its congeners. Alates are reared and disperse in high summer.


IUCN Red List status: VU D2 Listed as: Crematogaster pilosa

Specimen Habitat Summary

Found most commonly in these habitats: 1 times found in rainforest, 2 times found in roadedge veg., 2 times found in oak-pine woodland, 1 times found in Moist hardwood forest, 1 times found in pine/palmetto flatwoods, 1 times found in cedar/hardwood, 1 times found in coastal marsh, 1 times found in cypress swamp, 1 times found in mesic hammock, 1 times found in oak woodland, ...

Found most commonly in these microhabitats: 2 times on Vigna luteola, 1 times on extrafloral nectary Passiflora incarnata, 1 times in dead pine wood, 1 times ex dead branch; Pinus palustris, 1 times back of beach, 1 times nest in dead branch Persea, 1 times nest in base of dead erect oak trunk, 1 times ex sifted litter, 1 times ex dead branch of Pinus palustris, 1 times with quercus pumila, S. end of preserve, 1 times on low vegetation, ...

Collected most commonly using these methods: 8 times search, 1 times Winkler, 1 times beating vegetation (1 hour).

Elevations: collected from 2 - 240 meters, 40 meters average

Collect Date Range: collected between 1888-08-29 and 2018-06-06

Type specimens: Syntype: fmnhins0000062697, fmnhins0000062698, fmnhins0000062699; syntype of Crematogaster creightoni: casent0912712; syntype of Crematogaster lineolata pilosa: casent0919707

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